BASIC FIXED-SITE DATA

1996 Water-Year
Water-Quality and Water-Discharge Records
[drop]


List of Basic Fixed Sites*
    Allegheny River at New Kensington, PA
    Monongahela River at Braddock, PA
    Youghiogheny River at Sutersville, PA
    French Creek at Utica, PA
    Dunkard Creek at Shannopin, PA
    Stonycreek River at Ferndale, PA

*  Discharge and water-quality data not collected for Cheat River at Mount Nebo, WV, and East Hickory Creek near Queen, PA during the 1996 Water-Year.


Start of French Creek Data
To List of Basic Fixed Sites


                                                FRENCH CREEK BASIN

                                       03024000  FRENCH CREEK AT UTICA, PA
                                   (National water-quality assessment station)

LOCATION.--Lat 41`26'15", long 79`57'22", Venango County, Hydrologic Unit 05010004, on right bank at upstream side
   of bridge on SR 3017 at Utica and 2,000 ft upstream from Mill Creek.

DRAINAGE AREA.--1,028 mi2.

                                             WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--August 1932 to current year.

REVISED RECORDS.--WSP 743:   Drainage area.  WSP 823:   1936 (M).  WSP 1275:   1933, 1936.

GAGE.--Water-stage recorder.  Datum of gage is 1,019.44 ft above sea level.  Prior to Nov. 27, 1933, nonrecording
   gage at same site and datum.

REMARKS.--Records good except for estimated daily discharges, which are fair.  Flow regulated since 1971 by Union
   City Reservoir 50 mi upstream, serving as a retarding basin, and since January 1974 by Woodcock Creek Lake,
   25 mi upstream.  Several measurements of water temperature were made during the year.  U.S. Army Corps of
   Engineers satellite telemeter at station.

EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum stage since at least 1912, 15.7 ft in March 1913, discharge
   35,600 ft3/s.

                    DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996
                                               DAILY MEAN VALUES

DAY       OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP

  1        66      605     3150    e1100    e2700     5020     1430     6420      587     1550     2060      248
  2        63      663     2810    e1200    e2300     4110     1390     6380      543     1360     1700      235
  3        64      703     2600     1100    e2000     3430     1310     5350      577     1160     1420      222
  4        90      908     2530    e1000    e1800     2810     1230     4500      803      948     1140      213
  5       109      961     2550     e960    e1600     3290     1180     4160      970      752      880      207

  6       239      872     2350     e920    e1400     5510     1160     3800      920      691      672      202
  7       323      840     2150     e900    e1350     5210     1120     3370     1220      604      580      303
  8       560     1280     1910     e860    e1400     3970     1020     2900     3520      597      525      442
  9       517     1760     1780     e840    e2100     3460      941     2630     3830      617      924      737
 10       389     1680     1360     e820    e3200     2970      889     3590     2870      568     1460      910

 11       292     2010     1090     e800     3450     2890      856     9690     2150      471     1010      823
 12       230     5650     e880     e780     3230     2450      824    12600     1850      418      669      706
 13       202     6220     e760     e760     2620     2340     1070    12100     2140      388      552      666
 14       224     5150    e1000     e760     2310     2390     2750     9130     1830      487      496      746
 15       282     4240     1970     e760     2060     2980     3100     6150     1490      745      467      966

 16       320     3780     3270     e740     1900     3160     4530     4590     1190     1700      532     1100
 17       523     3340     3440     e740     1450     2830     5030     3960      893     1780      536     2000
 18       567     3130     3210    e3000     1270     2470     4410     3530     1050     1350      537     3990
 19       450     3490     2520   e11500     1170     2250     3830     3190     6350    10300      455     4300
 20       364     3870     1730    15600     1750     3230     3320     2800     7360     9050      401     3460

 21       390     3910    e1500    15000     4260     3230     3490     2310     6950     6380      435     2480
 22       426     3690    e1350    11500     5760     2910     3340     2410     5520     4290      427     1620
 23       541     3380    e1250     7680     6730     2560     4890     2160     4220     3330      512     2100
 24       492     3010    e1200     7280     6460     2380     8850     1870     3540     2520      496     3350
 25       413     2690    e1100     7660     5300     2260     9220     1640     3580     1980      395     3020

 26       363     2440    e1050     6740     4210     2300     6730     1300     3200     1540      364     2570
 27       328     2310    e1000     5740     4030     2400     5050      989     2690     1190      338     2000
 28       307     2840    e1000    e4700     5620     2200     4070      833     2320      981      312     4270
 29       303     3900     e980    e4000     6120     1990     3880      782     1940      848      289     7720
 30       332     3510     e960    e3400      ---     1800     5280      719     1730      829      270     7390
 31       419      ---     e960    e3000      ---     1580      ---      652      ---     1730      259      ---

TOTAL   10188    82832    55410   121840    89550    92380    96190   126505    77833    61154    21113    58996
MEAN      329     2761     1787     3930     3088     2980     3206     4081     2594     1973      681     1967
MAX       567     6220     3440    15600     6730     5510     9220    12600     7360    10300     2060     7720
MIN        63      605      760      740     1170     1580      824      652      543      388      259      202
CFSM      .32     2.69     1.74     3.82     3.00     2.90     3.12     3.97     2.52     1.92      .66     1.91
IN.       .37     3.00     2.01     4.41     3.24     3.34     3.48     4.58     2.82     2.21      .76     2.13

   e  Estimated.
                                                FRENCH CREEK BASIN

                                  03024000  FRENCH CREEK AT UTICA, PA--Continued

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1972 - 1996, BY WATER YEAR (WY)  (SINCE REGULATION)

          OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP

MEAN     1262     2375     2907     2536     2859     3864     3050     1724     1390      909      716      991
MAX      3954     6309     6029     5426     6394     6466     5101     4081     4659     2629     3297     3408
(WY)     1991     1986     1978     1993     1976     1972     1994     1996     1986     1987     1980     1990
MIN       121      176     1049      869      629     2085     1655      452      209      192      112     71.7
(WY)     1992     1992     1990     1977     1987     1990     1976     1985     1991     1995     1991     1995

SUMMARY STATISTICS           FOR 1995 CALENDAR YEAR        FOR 1996 WATER YEAR           WATER YEARS 1972 - 1996

ANNUAL TOTAL                      475343                     893991
ANNUAL MEAN                         1302                       2443                       2044
HIGHEST ANNUAL MEAN                                                                       2443              1996
LOWEST ANNUAL MEAN                                                                        1349              1995
HIGHEST DAILY MEAN                  6970     Mar  9           15600     Jan 20           18100       Feb 21 1981
LOWEST DAILY MEAN                     63     Oct  2              63     Oct  2              60       Sep 15 1991
ANNUAL SEVEN-DAY MINIMUM              67     Sep  7             136     Oct  1              67       Sep  7 1995
INSTANTANEOUS PEAK FLOW                                       16100     Jan 20           18400       Feb 21 1981
INSTANTANEOUS PEAK STAGE                                         10.93  Jan 20              11.64    Feb 21 1981
ANNUAL RUNOFF (CFSM)                   1.27                       2.38                       1.99
ANNUAL RUNOFF (INCHES)                17.20                      32.35                      27.01
10 PERCENT EXCEEDS                  3500                       5400                       4580
50 PERCENT EXCEEDS                   801                       1730                       1380
90 PERCENT EXCEEDS                    87                        399                        267

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1933 - 1971, BY WATER YEAR (WY)  (PRIOR TO REGULATION)

          OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP

MEAN      695     1506     2238     2590     2713     3915     3147     1684      953      555      408      440
MAX      3744     3983     4471     7284     5894     7359     6688     4160     3717     2015     1907     2148
(WY)     1946     1971     1951     1937     1938     1964     1947     1956     1947     1967     1956     1958
MIN      69.5      183      227      403      523     1768      575      349      124     77.1     77.8     80.4
(WY)     1964     1954     1961     1961     1934     1937     1946     1934     1934     1934     1954     1954

SUMMARY STATISTICS           WATER YEARS 1933 - 1971

ANNUAL MEAN                   1732
HIGHEST ANNUAL MEAN           2539              1956
LOWEST ANNUAL MEAN            1146              1934
HIGHEST DAILY MEAN           23000       Mar  6 1964
LOWEST DAILY MEAN               45       Sep  1 1933
ANNUAL SEVEN-DAY MINIMUM        48       Aug 27 1933
INSTANTANEOUS PEAK FLOW      23800       Mar  7 1964
INSTANTANEOUS PEAK STAGE       a13.2     Mar  7 1964
INSTANTANEOUS LOW FLOW          43       Jul 30 1934
ANNUAL RUNOFF (CFSM)             1.68
ANNUAL RUNOFF (INCHES)          22.89
10 PERCENT EXCEEDS            4350
50 PERCENT EXCEEDS             909
90 PERCENT EXCEEDS             144

   a  From floodmark in gage well.

                                                FRENCH CREEK BASIN

                                 03024000   FRENCH CREEK AT UTICA, PA--Continued

                                              WATER-QUALITY RECORDS

PERIOD OF RECORD.--April 1996 to current year.

REMARKS.--All water-quality samples collected and analyzed by the U.S. Geological Survey.  Additional sites in the
   fixed-station network are shown in figure 4, page 26.

                          WATER-QUALITY DATA, WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996

                       DIS-              PH               BARO-
                     CHARGE,   SPE-     WATER             METRIC            HARD-             MAGNE-
                      INST.    CIFIC    WHOLE             PRES-             NESS    CALCIUM    SIUM,  SODIUM,
                      CUBIC    CON-     FIELD   TEMPER-    SURE   OXYGEN,   TOTAL    DIS-      DIS-    DIS-
                       FEET    DUCT-   (STAND-   ATURE     (MM      DIS-    (MG/L    SOLVED   SOLVED  SOLVED
    DATE      TIME     PER     ANCE      ARD     WATER      OF     SOLVED    AS      (MG/L    (MG/L    (MG/L
                      SECOND  (µS/CM)   UNITS)  (DEG C)    HG)     (MG/L)   CACO3)   AS CA)   AS MG)   AS NA)
                     (00061)  (00095)  (00400)  (00010)  (00025)  (00300)  (00900)  (00915)  (00925)  (00930)

APR
  18...       0915     4490     177      7.2      6.5      732      11.6      59      18       3.5      8.3
MAY
  22...       1100     2450     187      7.7     19.5      728       8.8      75      23       4.2      6.3
JUN
  18...       1100      783     239      7.8     22.0      728       7.7      94      29       5.2      7.9
JUL
  16...       1000     1670     246      7.6     21.5      734       7.0      91      28       5.0      8.2
AUG
  06...       1000      677     235      7.8     22.5      737       6.9      94      29       5.2      7.0
SEP
  05...       0930      208     333      8.1     22.0      732       6.7     130      40       7.4     11


                      ALKA-                                       SOLIDS,   NITRO-   NITRO-   NITRO-   NITRO-
             POTAS-  LINITY             CHLO-    FLUO-   SILICA,  RESIDUE    GEN,     GEN,     GEN,   GEN,AM-
              SIUM,  WAT DIS  SULFATE   RIDE,    RIDE,    DIS-    AT 180   NITRITE  NO2+NO3  AMMONIA  MONIA +
              DIS-   TOT IT    DIS-     DIS-      DIS-    SOLVED   DEG. C    DIS-     DIS-     DIS-   ORGANIC
             SOLVED   FIELD    SOLVED   SOLVED   SOLVED   (MG/L     DIS-    SOLVED   SOLVED   SOLVED   TOTAL
    DATE     (MG/L   MG/L AS   (MG/L    (MG/L    (MG/L     AS      SOLVED   (MG/L    (MG/L    (MG/L    (MG/L
             AS K)    CACO3   AS SO4)   AS CL)   AS F)    SIO2)    (MG/L)   AS N)    AS N)    AS N)    AS N)
            (00935)  (39086)  (00945)  (00940)  (00950)  (00955)  (70300)  (00613)  (00631)  (00608)  (00625)

APR
  18...      1.2        39      14       15       <0.10    3.2      100      0.010    0.590    0.020     0.40
MAY
  22...      1.3        62      12       11       <0.10    2.9      104     <0.010    0.450   <0.015     0.40
JUN
  18...      1.3        78      12       13       <0.10    2.6      138      0.010    0.430    0.020     0.30
JUL
  16...      1.8        77      13       15       <0.10    2.5      135      0.010    0.540    0.050     0.50
AUG
  06...      1.6        76      12       12       <0.10    4.7      133      0.010    0.470    0.020     0.30
SEP
  05...      2.0       108      16       19        0.10    2.3      175      0.010    0.450    0.020     0.30


             NITRO-                     PHOS-                              CARBON,             SED.
            GEN,AM-            PHOS-   PHORUS             MANGA-  CARBON,  ORGANIC             SUSP.
            MONIA +   PHOS-   PHORUS    ORTHO,   IRON,    NESE,   ORGANIC   SUS-     SEDI-    SIEVE
            ORGANIC  PHORUS     DIS-    DIS-      DIS-     DIS-    DIS-    PENDED    MENT,     DIAM.
             DIS.     TOTAL    SOLVED  SOLVED    SOLVED   SOLVED  SOLVED    TOTAL    SUS-    % FINER
    DATE     (MG/L    (MG/L    (MG/L   (MG/L     (µG/L    (µG/L    (MG/L    (MG/L    PENDED    THAN
             AS N)    AS P)    AS P)   AS P)     AS FE)   AS MN)   AS C)    AS C)    (MG/L)  .062 MM
            (00623)  (00665)  (00666)  (00671)  (01046)  (01056)  (00681)  (00689)  (80154)  (70331)

APR
  18...        0.60    0.050    0.010   <0.010     74      14        4.3      0.20       37       95
MAY
  22...        0.30    0.040    0.010   <0.010    110       8.0      4.1      0.70       16       79
JUN
  18...        0.20    0.040   <0.010    0.010     86      15        4.9      0.60       13       95
JUL
  16...        0.20    0.050   <0.010    0.010    130       4.0      4.2      --         30       83
AUG
  06...        0.30    0.020   <0.010    0.020    140      24        4.5      0.40       11       94
SEP
  05...        0.30    0.030    0.020    0.020     49      24        3.4      0.30        6       50


                                                FRENCH CREEK BASIN

                                  03024000  FRENCH CREEK AT UTICA, PA--Continued

REMARKS.--Samples are filtered through a glass-fiber membrane filter with openings that are 0.7 microns in size to
   remove sediment and microorganisms. Therefore, this schedule is suitable for compounds dissolved in water.
   Each sample was analyzed for all of the compounds in this schedule.  The MDL provides an index to indicate
   where measurement uncertainty is increased.  When an analyte is detected and all criteria for a positive result
   are met, the concentration is reported.  If the Concentration is less than the MDL, an 'E' code will be
   reported with the value.  If the analyte is qualitatively identified as present, but the quantitative
   determination is substantially more uncertain, the NWQL will identify the result with an 'E' code even though
   the measured value is greater than the MDL.  A value reported with an 'E' code should be used with caution.
   When no analyte is detected in a sample, the 	default reporting value is the MDL preceded by a less than sign
   (<).

                          WATER-QUALITY DATA, WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996

                            DEETHYL           METHYL     BEN-              CAR-    CARBO-
           ACETO-   ALA-     ATRA-    ATRA-    AZIN-    FLUR-    BUTYL-   BARYL    FURAN             CYANA-   DCPA
           CHLOR,   CHLOR,   ZINE,    ZINE,    PHOS     ALIN     ATE,     WATER    WATER    CHLOR-   ZINE,   WATER
           WATER    WATER,   WATER,   WATER,  WAT FLT  WAT FLD   WATER,   FLTRD    FLTRD   PYRIFOS   WATER,  FLTRD
           FLTRD    DISS,    DISS,    DISS,    0.7 U    0.7 U    DISS,    0.7 U    0.7 U     DIS-    DISS,    0.7U
 DATE       REC     REC,     REC      REC     GF, REC  GF, REC   REC     GF, REC  GF, REC   SOLVED   REC    GF,REC
           (µG/L)  (µG/L)   (µG/L)   (µG/L)   (µG/L)   (µG/L)   (µG/L)   (µG/L)   (µG/L)    (µG/L)  (µG/L)  (µG/L)
          (49260)  (46342)  (04040)  (39632)  (82686)  (82673)  (04028)  (82680)  (82674)  (38933) (04041) (82682)
JUN
  19...    0.014    0.031   E0.017    1.40    <0.001   <0.002   <0.002   E0.006   <0.003   <0.004   0.010   <0.002



                                    2,6-DI-   DISUL-            ETHAL-   ETHO-                                LIN-
                                      ETHYL    FOTON    EPTC     FLUR-    PROP                                URON
                     DI-      DI-    ANILINE   WATER    WATER    ALIN     WATER   FONOFOS   ALPHA            WATER
           P,P'    AZINON,   ELDRIN  WAT FLT   FLTRD    FLTRD   WAT FLT   FLTRD    WATER     BHC    LINDANE  FLTRD
            DDE      DIS-     DIS-    0.7 U    0.7 U    0.7 U    0.7 U    0.7 U    DISS      DIS-    DIS-    0.7 U
 DATE     DISSOLV   SOLVED  SOLVED  GF, REC  GF, REC  GF, REC  GF, REC  GF, REC    REC    SOLVED   SOLVE   GF,REC
         (µG/L)    (µG/L)   (µG/L)  (µG/L)   (µG/L)   (µG/L)   (µG/L)   (µG/L)   (µG/L)   (µG/L)    (µG/L)  (µG/L)
         (34653)  (39572)  (39381)  (82660)  (82677)  (82668)  (82663)  (82672)  (04095)  (34253  (39341)  (82666)

JUN
  19...  <0.006   <0.002   <0.001   <0.003   <0.017   <0.002   <0.004   <0.003   <0.003   <0.002   <0.004    0.013



                                       MOL-   NAPROP-           METHYL     PEB-   PENDI-     PER-
                             METRI-   INATE    AMIDE             PARA-    ULATE    METH-  METHRIN  PHORATE   PRO-
           MALA-    METO-    BUZIN    WATER    WATER    PARA-    THION    WATER    ALIN      CIS    WATER   METON,
           THION,  LACHLOR  SENCOR    FLTRD    FLTRD    THION,  WAT FLT   FILTRD  WAT FLT  WAT FLT   FLTRD  WATER,
            DIS-    WATER    WATER    0.7 U    0.7 U     DIS-    0.7 U    0.7 U    0.7 U    0.7 U    0.7 U   DISS,
 DATE      SOLVED  DISSOLV  DISSOLV  GF, REC  GF, REC   SOLVED  GF, REC  GF, REC  GF, REC  GF, REC  GF, REC   REC
           (µG/L)  (µG/L)   (µG/L)   (µG/L)   (µG/L)    (µG/L)  (µG/L)   (µG/L)   (µG/L)   (µG/L)   (µG/L)  (µG/L)
          (39532)  (39415)  (82630)  (82671)  (82684)  (39542)  (82667)  (82669)  (82683)  (82687) (82664) (04037)

JUN
  19...   <0.005    0.770    0.011   <0.004   <0.003   <0.004   <0.006   <0.004   <0.004   <0.005  <0.002  E0.005



           PRON-              PRO-     PRO-             TEBU-     TER-     TER-    THIO-    TRIAL-    TRI-
           AMIDE    PROP-    PANIL   PARGITE   SI-     THIURON   BACIL    BUFOS   BENCARB   LATE     FLUR-
           WATER    CHLOR,   WATER    WATER   MAZINE,   WATER    WATER    WATER    WATER    WATER    ALIN
           FLTRD    WATER,   FLTRD    FLTRD    WATER,   FLTRD    FLTRD    FLTRD    FLTRD    FLTRD   WAT FLT
           0.7 U    DISS,    0.7 U    0.7 U    DISS,    0.7 U    0.7 U    0.7 U    0.7 U    0.7 U    0.7 U
 DATE     GF, REC   REC     GF, REC  GF, REC   REC     GF, REC  GF, REC  GF, REC  GF, REC  GF, REC  GF, REC
          (µG/L)   (µG/L)   (µG/L)   (µG/L)   (µG/L)   (µG/L)   (µG/L)   (µG/L)   (µG/L)   (µG/L)   (µG/L)
          (82676)  (04024)  (82679)  (82685)  (04035)  (82670)  (82665)  (82675)  (82681)  (82678)  (82661)

JUN
  19...   <0.003   <0.007   <0.004   <0.013    0.150   <0.010   <0.007   <0.013   <0.002   <0.001   <0.002



Start of Stonycreek River Data
To List of Basic Fixed Sites

                                             CROOKED CREEK BASIN

                                            KISKIMINETAS RIVER BASIN

                                    03040000  STONYCREEK RIVER AT FERNDALE, PA
                                   (National water-quality assessment station)

LOCATION.--Lat 40`17'08", long 78`55'15", Cambria County, Hydrologic unit 05010007, on right bank 50 ft upstream
   from highway bridge at Ferndale, 0.4 mi downstream from Bens Creek, 1.2 mi upstream from Johnstown city limits,
   and 5.2 mi upstream from confluence with Little Conemaugh River.

DRAINAGE AREA.--451 mi2.

                                             WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--October 1913 to March 1936, October 1938 to current year.  Monthly discharge only for some
   periods, published in WSP 1305.  Monthly figures adjusted for storage and diversion for October 1918 to
   September 1921, published in WSP 503, 523, have been found in error and should not be used.  Published as "at
   Johnstown" 1914-36, and as "Stony Creek at Ferndale" 1938-79.  Gage-height records collected in this vicinity
   since 1885 are contained in reports of U.S. Weather Bureau.

REVISED RECORDS.--WSP 743:   Drainage area.  WSP 1305:   1915, 1918, 1923-26.  WSP 1435:   1920-21, 1932,
   1941 (M), 1943 (M), 1945-46 (M).  WDR PA-78-3:   1977 (M).  See also PERIOD OF RECORD.

GAGE.--Water-stage recorder.  Datum of gage is 1,184.06 ft above sea level.  Prior to Mar. 19, 1936, nonrecording
   gage at site 3.5 mi downstream at different datum.  Dec. 8, 1938 to Jan. 30, 1940, nonrecording gage at site
   50 ft downstream at present datum.

REMARKS.--Records good except for estimated daily discharges, which are fair.  Regulation by mine pumpage and
   reservoirs and diversion above station; the four largest reservoirs have a combined capacity of 42,360 acre-ft.
   Figures of daily discharge do not include diversion from Stonycreek River and Quemahoning Creek Reservoir to
   plants of Bethlehem Steel Co., and from Mill Creek, Dalton Run, and North Fork Bens Creek Reservoirs for water
   supply of city of Johnstown.  Several measurements of water temperature were made during the year.  U.S. Army
   Corps of Engineers satellite telemeter at station.

                  DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996
                                               DAILY MEAN VALUES

DAY       OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP

  1        59      132     1130     e270      936     2890     1380     1640      784      498      548      128
  2        54      127     1360     e480     e700     2180     2010     1210      673      451      402      124
  3        51      140     1070      866     e600     1740     1600      989      593      663      323      120
  4        67      173     1180      824     e500     1350     1360      869      558      577      303      147
  5       121      148     1030      681     e440     1360     1360      875      530      411      292      168

  6       227      135      905      517     e400     2430     1170     1350      447      335      238      525
  7       145      131      754     e430     e370     3130     1060     1190      399     e300      206     6890
  8        98      161      610     e370     e500     2550      940     1960      349     e280      326     2710
  9        75      168      548     e340     2020     1850      858     3690      327     e280      930     1460
 10        66      155      411     e330     1700     1510      777     2990      325      225      330      971

 11        61      226      373     e310     2340     1350      746     2360      409      209      245      726
 12        60      692      347     e300     1920     1300      679     2830      448      196      247      581
 13        62      448      337     e290     1340     1270      614     2160      355      193      448    e2100
 14       111      375      362     e280     e900     1270      602     1680      429      192      324     1550
 15       141      398      604     e270     e700     1690      556     1420      366      322      252     1010

 16       116      397     1320     e260     e560     1820      677     1710      276      340      229      847
 17        89      378     1550     e300     e450     1560      855     2420      255      246      215     3900
 18        76      376     1080    e1400     e390     1450      929    e3300      791      389      192     4560
 19        68      465     e800   e15200     e320     1990      904    e2500     3250     2990      178     2670
 20        85      516     e640    10300     e500     6220      935    e1800     2540     2330      161     1800

 21       965      579     e560     3760    e1000     3770      791     1230     1390     1210      558     1330
 22       544      566     e500    e2000    e3100     2670      706     1160     1100      801      492     1170
 23       281      498     e460    e1400     3050    e2000      661      904     1030      682      294     1310
 24       206      486     e420    e1100     3650    e1700      774      762     1450      530      227     1070
 25       174      438     e380    e1400     3130    e1700      697      663     2410      416      192      909

 26       153      405     e370     2000     2690    e2000      632      571     1480      354      174      760
 27       140      523     e340     2800     3310     1630      639      638     1010      317      162      683
 28       133     1630     e330    e3200     8870     1460      564      970      777      290      199      843
 29       145     1480     e310    e2100     5000     1460      624     1260      640      282      196     1350
 30       153     1210     e300     1520      ---     1520     1180     1360      552      611      165     1060
 31       144      ---     e280     1240      ---     1350      ---      971      ---      754      142      ---

TOTAL    4870    13556    20661    56538    51386    62170    27280    49432    25943    17674     9190    43472
MEAN      157      452      666     1824     1772     2005      909     1595      865      570      296     1449
MAX       965     1630     1550    15200     8870     6220     2010     3690     3250     2990      930     6890
MIN        51      127      280      260      320     1270      556      571      255      192      142      120
CFSM      .35     1.00     1.48     4.04     3.93     4.45     2.02     3.54     1.92     1.26      .66     3.21
IN.       .40     1.12     1.70     4.66     4.24     5.13     2.25     4.08     2.14     1.46      .76     3.59

   e  Estimated.
                                             KISKIMINETAS RIVER BASIN

                              03040000  STONYCREEK RIVER AT FERNDALE, PA--Continued

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1939 - 1996, BY WATER YEAR (WY)

          OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP

MEAN      235      397      673      773     1031     1620     1359      825      491      266      179      189
MAX      1514     2099     2162     1929     2575     3581     3426     1792     1773      874     1098     1449
(WY)     1977     1986     1973     1952     1986     1994     1993     1978     1972     1977     1979     1996
MIN      13.6     20.4     48.4      137      262      367      336      186     77.4     28.4     26.3     18.9
(WY)     1964     1954     1954     1977     1963     1990     1946     1941     1965     1965     1957     1943

SUMMARY STATISTICS           FOR 1995 CALENDAR YEAR        FOR 1996 WATER YEAR           WATER YEARS 1939 - 1996

ANNUAL TOTAL                      173648                     382172
ANNUAL MEAN                          476                       1044                        670
HIGHEST ANNUAL MEAN                                                                       1044              1996
LOWEST ANNUAL MEAN                                                                         280              1954
HIGHEST DAILY MEAN                  2270     Mar  1          e15200     Jan 19           15900       Jun 23 1972
LOWEST DAILY MEAN                     51     Oct  3              51     Oct  3              11       Sep 26 1959
ANNUAL SEVEN-DAY MINIMUM              56     Sep  6              76     Oct  8              12       Oct  5 1963
INSTANTANEOUS PEAK FLOW                                       41600     Jan 19          a59000       Mar 18 1936
INSTANTANEOUS PEAK STAGE                                         17.64  Jan 19             b30.26    Mar 18 1936
INSTANTANEOUS LOW FLOW                                           51     Oct  3              c5.0     Sep  8 1929
ANNUAL RUNOFF (CFSM)                   1.05                       2.32                       1.49
ANNUAL RUNOFF (INCHES)                14.32                      31.52                      20.20
10 PERCENT EXCEEDS                  1100                       2350                       1600
50 PERCENT EXCEEDS                   378                        628                        325
90 PERCENT EXCEEDS                    69                        154                         56

   a  From rating curve extended above 13,000 ft3/s on the basis of slope-area and contracted-opening measurement
      of peak flow.
   b  From highwater mark, site and datum then in use.
   c  Minimum observed.
   e  Estimated.
                                             KISKIMINETAS RIVER BASIN

                              03040000  STONYCREEK RIVER AT FERNDALE, PA--Continued

                                              WATER-QUALITY RECORDS

PERIOD OF RECORD.--April 1996 to current year.

REMARKS.--All water-quality samples collected and analyzed by the U.S. Geological Survey.  Additional sites in the
   fixed-station network are shown in figure 4, page 26.

                          WATER-QUALITY DATA, WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996

                   DIS-              PH               BARO-
                 CHARGE,   SPE-     WATER             METRIC            HARD-   ACIDITY           MAGNE-
                  INST.    CIFIC    WHOLE             PRES-             NESS    TOTAL    CALCIUM    SIUM,  SODIUM,
                  CUBIC    CON-     FIELD   TEMPER-    SURE   OXYGEN,   TOTAL   HEATED    DIS-      DIS-    DIS-
                   FEET    DUCT-   (STAND-   ATURE     (MM      DIS-    (MG/L   (MG/L     SOLVED   SOLVED  SOLVED
  DATE    TIME    PER     ANCE      ARD     WATER      OF     SOLVED    AS      AS       (MG/L    (MG/L   (MG/L
                  SECOND  (µS/CM)   UNITS)  (DEG C)    HG)     (MG/L)   CACO3)  CAC03)    AS CA)   AS MG)   AS NA)
                  (00061)  (00095)  (00400) (00010)  (00025)  (00300)  (00900)  (70508)  (00915)  (00925)  (00930)

APR
  23...   1030     640      431       5.7     13.5      721     10.2      170    10         41       16       11
MAY
  21...   0930    1150      328       7.0     18.0      719      9.6      120     4.0       30       11        8.9
JUN
  12...   1045     440      488       7.0     19.5      725      8.6      200     7.0       51       18       11
JUL
  15...   1000     232      700       6.0     20.5      722      8.6      300    15         76       27       17
AUG
  14...   1145     319      514       6.6     20.5      729      9.3      200     6.0       50       18       15
SEP
  04...   1000     141      700       4.8     20.0      728      8.3      300    18         74       28       11


                      ALKA-                                       SOLIDS,   NITRO-   NITRO-   NITRO-   NITRO-
             POTAS-  LINITY             CHLO-    FLUO-   SILICA,  RESIDUE    GEN,     GEN,     GEN,   GEN,AM-
              SIUM,  WAT DIS  SULFATE   RIDE,    RIDE,    DIS-    AT 180   NITRITE  NO2+NO3  AMMONIA  MONIA +
              DIS-   TOT IT    DIS-     DIS-      DIS-    SOLVED   DEG. C    DIS-     DIS-     DIS-   ORGANIC
             SOLVED   FIELD    SOLVED   SOLVED   SOLVED   (MG/L     DIS-    SOLVED   SOLVED   SOLVED   TOTAL
   DATE      (MG/L   MG/L AS   (MG/L    (MG/L    (MG/L     AS      SOLVED   (MG/L    (MG/L    (MG/L    (MG/L
             AS K)    CACO3   AS SO4)   AS CL)   AS F)    SIO2)    (MG/L)   AS N)    AS N)    AS N)    AS N)
            (00935)  (39086)  (00945)  (00940)  (00950)  (00955)  (70300)  (00613)  (00631)  (00608)  (00625)

APR
  23...        1.4      2      160       12       <0.10    6.1      256      0.010    0.710    0.210   0.40
MAY
  21...        1.5      6      120        9.2      0.10    5.6      202     <0.010    0.790    0.100   0.30
JUN
  12...        1.6      5      200       11        0.20    6.1      330      0.020    0.630    0.230   0.30
JUL
  15...        1.8      2      320        9.6      0.10    8.0      499      0.020    0.300    0.230   0.30
AUG
  14...        1.9      4      220       11        0.10    6.3      347      0.020    0.550    0.260   0.40
SEP
  04...        2.3      2      320       12        0.10    9.1      476      0.020    0.580    0.430   0.50


             NITRO-                     PHOS-                                       CARBON,             SED.
            GEN,AM-            PHOS-   PHORUS    ALUM-             MANGA-  CARBON,  ORGANIC             SUSP.
            MONIA +   PHOS-   PHORUS    ORTHO,   INUM,    IRON,    NESE,   ORGANIC   SUS-     SEDI-    SIEVE
            ORGANIC  PHORUS     DIS-    DIS-      DIS-     DIS-     DIS-    DIS-    PENDED    MENT,     DIAM.
             DIS.     TOTAL    SOLVED  SOLVED    SOLVED   SOLVED   SOLVED  SOLVED    TOTAL    SUS-    % FINER
   DATE      (MG/L    (MG/L    (MG/L   (MG/L     (µG/L    (µG/L    (µG/L    (MG/L    (MG/L    PENDED    THAN
             AS N)    AS P)    AS P)   AS P)     AS AL)   AS FE)   AS MN)   AS C)    AS C)    (MG/L)  .062 MM
            (00623)  (00665)  (00666)  (00671)  (01106)  (01046)  (01056)  (00681)  (00689)  (80154)  (70331)

APR
  23...       0.30    0.020    0.010   <0.010      --      430      1300     1.2      1.0       9       90
MAY
  21...      <0.20    0.030   <0.010   <0.010      30      160       690     1.4      0.30     10       72
JUN
  12...       0.20    0.060    0.050   <0.010      32      130      1100     1.2      0.50      6       90
JUL
  15...       0.30   <0.010   <0.010   <0.010     101      150      1500     0.80     0.40     12       88
AUG
  14...       0.30    0.020   <0.010   <0.010      --      190      1300     1.6      0.70     13       77
SEP
  04...       0.40    0.030   <0.010   <0.010    1800      260      2500     0.80     0.50     11       89


Start of Allegheny River Data
To List of Basic Fixed Sites

                                               OHIO RIVER MAIN STEM

                                     03049500  ALLEGHENY RIVER AT NATRONA, PA
                                   (National water-quality assessment station)

LOCATION.--Lat 40`36'55", long 79`43'07", Allegheny County, Hydrologic Unit 05010009, on right bank 520 ft
   upstream from dam at lock 4 at Natrona, 5.8 mi downstream from Kiskiminetas River, at mile 24.3.

DRAINAGE AREA.--11,410 mi2, approximately.

                                             WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--October 1938 to current year.

REVISED RECORDS.--WSP 1435:   1939.

GAGE.--Water-stage recorder and concrete dam control.  Datum of gage is 736.36 ft above sea level (U.S. Army Corps
   of Engineers bench mark).  Prior to Apr. 14, 1940, nonrecording gage and Apr. 15, 1940 to Oct. 22, 1990, water-
   stage recorder at same site at datum 0.75 ft higher.

REMARKS.--No estimated daily discharges.  Records good.  Flow regulated by Allegheny Reservoir, Chautauqua and
   Tionesta Lakes, Union City Reservoir, Woodcock Creek, East Branch Clarion River, Mahoning Creek, Crooked Creek,
   Yellow Creek, Conemaugh River, and Loyalhanna Lakes and by 15 smaller reservoirs, combined capacity, excluding
   that of Chautauqua Lake, 2,069,000 acre-ft.  Slight diversion since 1952 from Beaver Run Reservoir into the
   Monongahela River Basin.  Several measurements of water temperature were made during the year.  U.S. Army Corps
   of Engineers satellite telemeter at station.

EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of Mar. 18, 1936 reached a stage of 32.06 ft, discharge, 365,000 ft3/s,
   determined by U.S. Army Corps of Engineers.

                 DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996
                                               DAILY MEAN VALUES

DAY       OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP

  1      3310     5730    31000     8520    53200    66000    22700    59000    10500    13200    11900     4020
  2      3310     7450    29700    10400    46800    61500    21600    61900     8770    12200    12600     4300
  3      4040     8960    28600    12400    40500    56300    20400    56800     7720    11900    11500     3640
  4      4890    10400    26900    11800    36100    49000    19500    50000     8250    10800     9740     4260
  5      4820    10600    26700    11400    30500    42800    18000    44200     8830    10400     7880     4450


  6      5760     9400    27400     8380    28200    52400    18200    38100     6910    10200     7280     4220
  7      6530     9400    25400     7540    23200    55000    17100    32200     6620     7230     6130     8710
  8      6360     8990    24700     6920    17100    50200    16400    31300     8060     6380     6010    10500
  9      6040    10300    21200     6690    18100    48900    14800    28400    14400     6620     8720    10100
 10      5420    11200    18000     7590    20700    44800    14500    31300    15700     6250    10300    17200

 11      4820    11200    12400     8050    23600    40000    13300    51200    14400     6230     9710    17200
 12      5060    15800    11600     7310    26300    34200    11200    91600    15400     5690     7180    15700
 13      3650    27200     9120     7690    26500    27500    11000    80100    15500     4830     7190    19800
 14      4080    28100    11400     7540    25700    25800    12500    67200    16400     4240     5380    30600
 15      4530    27900    13400     8210    23800    25100    21900    65500    15700     6030     4970    31200

 16      4740    27700    16000     7920    19500    27000    27700    60100    12900     6830     5960    27600
 17      5690    27300    19900     9720    16200    27300    31900    57300    11100    11700     6980    26700
 18      4290    25900    22100    15200    16300    25300    34400    59500    11200    13900     5760    41000
 19      5540    25100    19800    83300    15700    25400    37500    57900    27100    38600     5380    49900
 20      4960    27300    14400   166000    18400    38500    34900    52500    53700    85500     4940    44800

 21      4550    29000    13500   108000    32200    40000    31600    41100    46000    39700     6810    38300
 22      5930    27600    11000    65800    44300    38500    27400    35500    39600    33900    10100    31800
 23      7810    27300    11700    65100    51700    39800    26600    35100    34400    30100     8920    28400
 24      5730    24500    12500    63800    49000    36900    29200    33200    32300    25900     8870    27400
 25      7950    22300    11000    69200    47600    34900    36600    30900    32900    22600     8980    22900

 26     10200    19700    10600    63300    45100    33900    37000    27800    32400    15500     6810    18700
 27      9360    18200     9560    59300    52400    32400    33500    22100    27000    13200     7810    16600
 28      9490    19400     9820    58800    63800    31400    31200    17800    21300    11000     5710    17500
 29      7200    24700     9300    60400    69500    30800    29700    11900    18800     9490     4360    41900
 30      6210    31000     8780    60400      ---    27000    42200    13200    15900     9700     4020    44500
 31      7740      ---     8460    59700      ---    25000      ---    12200      ---    11000     3770      ---

TOTAL  180010   579630   525940  1146380   982000  1193600   744500  1356900   589760   500820   231670   663900
MEAN     5807    19320    16970    36980    33860    38500    24820    43770    19660    16160     7473    22130
MAX     10200    31000    31000   166000    69500    66000    42200    91600    53700    85500    12600    49900
MIN      3310     5730     8460     6690    15700    25000    11000    11900     6620     4240     3770     3640
CFSM      .51     1.69     1.49     3.24     2.97     3.37     2.17     3.84     1.72     1.42      .65     1.94
IN.       .59     1.89     1.71     3.74     3.20     3.89     2.43     4.42     1.92     1.63      .76     2.16

                                               OHIO RIVER MAIN STEM

                               03049500  ALLEGHENY RIVER AT NATRONA, PA--Continued

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1939 - 1996, BY WATER YEAR (WY)

          OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP

MEAN     9616    16350    23980    24680    27350    39040    35840    22970    14790     9271     6716     7041
MAX     34470    45220    48690    68600    53390    87030    83780    48400    45820    34630    23020    22690
(WY)     1991     1986     1978     1952     1976     1945     1940     1943     1989     1972     1956     1990
MIN      1227     2686     2316     4520     7167    10410     9000     6129     3759     1944     1786     1444
(WY)     1964     1954     1961     1961     1963     1969     1946     1941     1991     1966     1962     1939

SUMMARY STATISTICS           FOR 1995 CALENDAR YEAR        FOR 1996 WATER YEAR           WATER YEARS 1939 - 1996

ANNUAL TOTAL                     5067150                    8695110
ANNUAL MEAN                        13880                      23760                      19760
HIGHEST ANNUAL MEAN                                                                      27810              1956
LOWEST ANNUAL MEAN                                                                       13540              1963
HIGHEST DAILY MEAN                 44700     Jan 24          166000     Jan 20          206000       Dec 31 1942
LOWEST DAILY MEAN                   2210     Aug 25            3310     Oct  1,2           949       Oct 26 1963
ANNUAL SEVEN-DAY MINIMUM            2600     Aug 23            4050     Aug 29            1030       Oct 25 1963
INSTANTANEOUS PEAK FLOW                                      182000     Jan 20          238000       Dec 30 1942
INSTANTANEOUS PEAK STAGE                                        a24.18  Jan 20             b27.46    Dec 30 1942
INSTANTANEOUS LOW FLOW                                                                     985       Oct 22 1963
ANNUAL RUNOFF (CFSM)                                2.08                                     1.73
ANNUAL RUNOFF (INCHES)                             28.35                                    23.53
10 PERCENT EXCEEDS                 28800                      51900                      45200
50 PERCENT EXCEEDS                 10600                      17900                      13100
90 PERCENT EXCEEDS                  3610                       5750                       3090

   a  From floodmark in gage.
   b  Datum then in use.

                                               OHIO RIVER MAIN STEM

                                 03049625  ALLEGHENY RIVER AT NEW KENSINGTON, PA
                                   (National water-quality assessment station)

                                              WATER-QUALITY RECORDS

LOCATION.--Lat  40`33'52", long 79`46'22", Allegheny County, Hydrologic Unit 05010009, at New Kensington highway
   bridge, 5.1 mi downstream from dam at Lock 4 at Natrona, 5.3 mi down stream from gaging station at Natrona, and
   19.0 mi upstream from mouth.
DRAINAGE AREA.--11,500 mi2.
PERIOD OF RECORD.--July 1972 to December 1973, October 1974 to current year.
REMARKS.--Records of discharge are given for 03049500 Allegheny River at Natrona, Pa.  Additional sites in the
   fixed-station network are shown in figure 4, page 26.

                          WATER-QUALITY DATA, WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996
                     DIS-              PH               BARO-
                   CHARGE,   SPE-     WATER             METRIC            HARD-             MAGNE-
                    INST.    CIFIC    WHOLE             PRES-             NESS    CALCIUM    SIUM,  SODIUM,
                    CUBIC    CON-     FIELD   TEMPER-    SURE   OXYGEN,   TOTAL    DIS-      DIS-    DIS-
                     FEET    DUCT-   (STAND-   ATURE     (MM      DIS-    (MG/L    SOLVED   SOLVED  SOLVED
    DATE    TIME     PER     ANCE      ARD     WATER      OF     SOLVED    AS      (MG/L    (MG/L    (MG/L
                    SECOND  (µS/CM)   UNITS)  (DEG C)    HG)     (MG/L)   CACO3)   AS CA)   AS MG)   AS NA)
                   (00061)  (00095)  (00400)  (00010)  (00025)  (00300)  (00900)  (00915)  (00925)  (00930)
DEC
  06...     1200    28200     210      6.1      4.0      740     13.0       68      19        5.1      9.3
JAN
  20...     1445   180000     177      5.5      1.5      --       --        47      13        3.6      9.6
APR
  25...     0930    37800     194      7.4     12.0      735     10.0       65      18        4.8      8.6
MAY
  16...     0900    58500     147      7.3     11.0      737     12.0       50      14        3.7      5.5
JUN
  24...     0845    31700     194      6.7     22.0      735     10.0       65      18        4.8      7.2
JUL
  22...     0930    36700     167      6.9     20.5      734      7.2       51      14        4.0      6.9
AUG
  08...     0900     5830     290      7.6     25.0      739      7.4       97      26        7.7     14
SEP
  11...     0930    14500     350      7.6     23.5      741      8.8      110      31        8.8     16
                     ALKA-                                        SOLIDS,   NITRO-   NITRO-   NITRO-   NITRO-
             POTAS-  LINITY             CHLO-    FLUO-   SILICA,  RESIDUE    GEN,     GEN,     GEN,   GEN,AM-
              SIUM,  WAT DIS  SULFATE   RIDE,    RIDE,    DIS-    AT 180   NITRITE  NO2+NO3  AMMONIA  MONIA +
              DIS-   TOT IT    DIS-     DIS-      DIS-    SOLVED   DEG. C    DIS-     DIS-     DIS-   ORGANIC
             SOLVED   FIELD    SOLVED   SOLVED   SOLVED   (MG/L     DIS-    SOLVED   SOLVED   SOLVED   TOTAL
    DATE     (MG/L   MG/L AS   (MG/L    (MG/L    (MG/L     AS      SOLVED   (MG/L    (MG/L    (MG/L    (MG/L
             AS K)    CACO3   AS SO4)   AS CL)   AS F)    SIO2)    (MG/L)   AS N)    AS N)    AS N)    AS N)
            (00935)  (39086)  (00945)  (00940)  (00950)  (00955)  (70300)  (00613)  (00631)  (00608)  (00625)
DEC
  06...        1.4     27       42       14       <0.10    4.9      112     <0.010    0.800    0.030    <0.20
JAN
  20...        2.0     --       30       14        0.10    4.3       96      0.010    1.00     0.200     2.3
APR
  25...        1.2     25       40       12       <0.10    3.6      110     <0.010    0.480   <0.015    <0.20
MAY
  16...        1.2     20       28        8.2     <0.10    4.7       91     <0.010    0.500    0.040     0.30
JUN
  24...        1.6     25       40        9.2      0.10    5.5      108      0.020    0.740    0.060     0.20
JUL
  22...        2.1     15       41        8.0     <0.10    4.6      102      0.020    0.620    0.070     0.40
AUG
  08...        1.7     37       73       15        0.10    4.2      180     <0.010    0.500   <0.015     0.20
SEP
  11...        2.1     43       87       19        0.10    3.3      203      0.020    0.500    0.050     0.30
             NITRO-                     PHOS-                                       CARBON,             SED.
            GEN,AM-            PHOS-   PHORUS    ALUM-             MANGA-  CARBON,  ORGANIC             SUSP.
            MONIA +   PHOS-   PHORUS    ORTHO,   INUM,    IRON,    NESE,   ORGANIC   SUS-     SEDI-    SIEVE
            ORGANIC  PHORUS     DIS-    DIS-      DIS-     DIS-     DIS-    DIS-    PENDED    MENT,     DIAM.
             DIS.     TOTAL    SOLVED  SOLVED    SOLVED   SOLVED   SOLVED  SOLVED    TOTAL    SUS-    % FINER
    DATE     (MG/L    (MG/L    (MG/L   (MG/L     (µG/L    (µG/L    (µG/L    (MG/L    (MG/L    PENDED    THAN
             AS N)    AS P)    AS P)   AS P)     AS AL)   AS FE)   AS MN)   AS C)    AS C)    (MG/L)  .062 MM
            (00623)  (00665)  (00666)  (00671)  (01106)  (01046)  (01056)  (00681)  (00689)  (80154)  (70331)
DEC
  06...     <0.20     0.020    <0.010   <0.010     30       52      200       --       --       --       --
JAN
  20...      0.60     0.650     0.010    0.010     --      160      620       --       --       --       --
APR
  25...     <0.20     0.020    <0.010   <0.010     --       49      180       2.2      0.40     12       92
MAY
  16...     <0.20     0.050    <0.010   <0.010     --       53      110       2.5      1.5      30       86
JUN
  24...      0.30    <0.010    <0.010   <0.010     --       34       97       3.6      0.70     30       96
JUL
  22...      0.30     0.050    <0.010   <0.010     --       65      140       4.2      3.6     190       99
AUG
  08...     <0.20     0.030    <0.010   <0.010     --       14      120       2.1      0.60      9       98
SEP
  11...     <0.20    <0.010    <0.010   <0.010     --       12      100       2.0      0.40     13       98
                                                                                          MONONGAHELA RIVER BASIN

Start of Dunkard Creek Data
To List of Basic Fixed Sites

                                     03072000  DUNKARD CREEK AT SHANNOPIN, PA
                                   (National water-quality assessment station)

LOCATION.--Lat 39`45'33", long 79`58'15", Greene County, Hydrologic Unit 05020005, on left bank 1,300 ft
   upstream from highway bridge at mine buildings at Shannopin, 1.2 mi north of Dunkard, 3.5 mi upstream from
   mouth, and 4 mi southwest of Greensboro.

DRAINAGE AREA.--229 mi2.

                                             WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--October 1940 to current year.  Prior to December 1940 monthly discharge only, published in
   WSP 1305.

REVISED RECORDS.--WSP 1505:   1955.

GAGE.--Water-stage recorder.  Datum of gage is 806.25 ft above sea level (levels by U.S. Army Corps of Engineers).

REMARKS.--Records good except for estimated daily discharges, which are fair.  Some regulation at low flow by
   mine pumpage above station.  Several measurements of water temperature were made during the year.  U.S. Army
   Corps of Engineers satellite telemeter at station.

PEAK DISCHARGES FOR CURRENT YEAR.--Peak discharges greater than a base discharge of 4,000 ft3/s and maximum (*):

                      Discharge    Gage height                                          Discharge    Gage height
 Date        Time      (ft3/s)        (ft)                         Date        Time      (ft3/s)        (ft)

Jan. 19      1800      *10,200        a11.50                      July  19     1100       8,030         10.55
Mar.  6     Unknown    Unknown       Unknown                      Sept. 17     1600       4,110          8.51

                 DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996
                                               DAILY MEAN VALUES

DAY       OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP

  1       8.8      9.3       51      e68      306     1170      445     e600      256       35     1270       20
  2       5.9     12         48     e100     e220      790      776     e960      193       31      584       17
  3       3.3     16         44     e600     e170      575      672      675      156      275      333       16
  4       3.2     14         44      726     e140      403      542      533      147      236      216       20
  5       6.0     12         43      398     e125      340      592     1070      139      114      155       24

  6      21       11         43      241     e120    e4100      576     1980      116       71      121       29
  7      31       11         44      160     e130     2580      510     1080       99       51      102       44
  8      24       15         43     e150     e160     1640      426      908       96       44       91       54
  9      15       22         36     e135    e1300      990      362     1530      129       42      228       55
 10      11       28         23     e130     1080     e560      308     1430       96       44     e170       65

 11       8.0     29         21     e120      763     e540      265     1070       91       36     e110       89
 12       7.6     32         24     e115      580     e480      231     2130       85       30      e90       56
 13      11       86         22     e110      440     e460      208     1140       77       25     e280       86
 14      14       78         25     e100      365     e450      193      737       75       19     e180      255
 15      26      137         38     e120     e300      576      174      575       83       20      117      126

 16      76      175        854     e170     e250      732      284     1410       99       25       91       91
 17      50      119       e450     e700     e210      561      540     2150       67       33       76     2390
 18      31      110       e330    e2400     e190      471      507     1350       55      129       64     1270
 19      23      261       e260    e7200     e170      438      416      801       50     5810       52      486
 20      17      260       e220     2500     e350     2380      347      554      110     2110       47      259

 21      18      185       e190      962     2070     1740      288      413      145      555       43      174
 22      14      130       e160      612     1190     1100      240      326       86      297       41      131
 23      12       92       e140      474      769      833      221      247       61     e220       60      115
 24      18       75       e125     1710      572      859      215      202       80     e150       51      102
 25      23       74       e115     2010      439      864      187      177      224     e250       42       83

 26      21       67       e105      973      359      835      175      147     e150     e420       38       71
 27      17       60        e96     1700     1350      637      180      143      e80      193       34       62
 28      14       52        e86     1460     3380      538      149      230       63      128       34      235
 29      12       51        e80      823     2020      615      140      356       52       95       31     1900
 30      11       51        e76      587      ---      528      214      781       43      558       31      879
 31       9.9      ---      e72      470      ---      448      ---      398      ---     2260       28      ---

TOTAL   562.7   2274.3     3908    28024    19518    29233    10383    26103     3203    14306     4810     9204
MEAN     18.2     75.8      126      904      673      943      346      842      107      461      155      307
MAX        76      261      854     7200     3380     4100      776     2150      256     5810     1270     2390
MIN       3.2      9.3       21       68      120      340      140      143       43       19       28       16
CFSM      .08      .33      .55     3.95     2.94     4.12     1.51     3.68      .47     2.02      .68     1.34
IN.       .09      .37      .63     4.55     3.17     4.75     1.69     4.24      .52     2.32      .78     1.50

   a  Maximum gage height, 11.59 ft, Jan. 19 (backwater from ice).
   e  Estimated.
                                             MONONGAHELA RIVER BASIN

                               03072000  DUNKARD CREEK AT SHANNOPIN, PA--Continued

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1941 - 1996, BY WATER YEAR (WY)

          OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP

MEAN     69.2      161      340      435      508      621      470      327      179     90.0     80.5     76.6
MAX       381     1149     1071     1050     1100     1475     1033      903      877      461      890      573
(WY)     1955     1986     1991     1994     1956     1994     1948     1968     1981     1996     1980     1975
MIN      1.73     2.44     7.46     26.5     63.5      112     80.9     57.4     10.2     4.62     2.45     2.39
(WY)     1952     1954     1954     1967     1954     1987     1971     1986     1966     1962     1962     1953

SUMMARY STATISTICS           FOR 1995 CALENDAR YEAR        FOR 1996 WATER YEAR           WATER YEARS 1941 - 1996

ANNUAL TOTAL                       71330.2                   151529.0
ANNUAL MEAN                          195                        414                        279
HIGHEST ANNUAL MEAN                                                                        462              1994
LOWEST ANNUAL MEAN                                                                         104              1954
HIGHEST DAILY MEAN                  2710     May 14           e7200     Jan 19           11200       Mar  5 1963
LOWEST DAILY MEAN                      2.6   Sep  7,8             3.2   Oct  4                .50    Aug 27 1944
ANNUAL SEVEN-DAY MINIMUM               3.6   Sep  5              11     Oct  1                .73    Aug 25 1944
INSTANTANEOUS PEAK FLOW                                       10200     Jan 19           17600       Aug 18 1980
INSTANTANEOUS PEAK STAGE                                         11.50  Jan 19              14.27    Aug 18 1980
INSTANTANEOUS LOW FLOW                                            3.2   Oct  3,4,5            .40    Aug 28 1944
ANNUAL RUNOFF (CFSM)                    .85                       1.81                       1.22
ANNUAL RUNOFF (INCHES)                11.59                      24.62                      16.57
10 PERCENT EXCEEDS                   548                       1080                        686
50 PERCENT EXCEEDS                    78                        148                         97
90 PERCENT EXCEEDS                     7.7                       21                          8.0

   e  Estimated.
                                             MONONGAHELA RIVER BASIN

                               03072000  DUNKARD CREEK AT SHANNOPIN, PA--Continued

                                              WATER-QUALITY RECORDS
PERIOD OF RECORD.--April 1996 to current year.

REMARKS.--All water-quality samples collected and analyzed by the U.S. Geological Survey.  Additional sites in the
   fixed-station network are shown in figure 4, page 26

                          WATER-QUALITY DATA, WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996

                   DIS-              PH               BARO-
                  CHARGE,   SPE-     WATER            METRIC            HARD-  ACIDITY            MAGNE-
                   INST.    CIFIC    WHOLE             PRES-             NESS    TOTAL   CALCIUM   SIUM,  SODIUM,
                  CUBIC     CON-     FIELD   TEMPER-    SURE   OXYGEN,   TOTAL  HEATED    DIS-      DIS-   DIS-
                   FEET     DUCT-   (STAND-   ATURE     (MM      DIS-    (MG/L   (MG/L    SOLVED   SOLVED  SOLVED
    DATE   TIME     PER     ANCE      ARD     WATER      OF     SOLVED    AS     AS       (MG/L    (MG/L  (MG/L
                   SECOND  (µS/CM)   UNITS)  (DEG C)    HG)     (MG/L)   CACO3)  CAC03)   AS CA)   AS MG) AS NA)
                  (00061)  (00095)  (00400)  (00010)  (00025)  (00300)  (00900)  (70508)  (00915)  (00925 (00930)

APR
  30...    0945    169       723      7.8     16.0     727      9.4      190       2.4      54     14       67
MAY
  30...    1145    750       388      7.5     16.0     741      9.3      110       2.8      32      7.2     31
JUN
  27...    1045     80       731      7.5     21.5     744      8.4      190       5.0      55     13       68
JUL
  25...    1045    360       775      7.9     22.0     736      8.7      200       2.2      58     14       78
AUG
  12...    1110     90       706      7.9     21.0     737      7.7      190       2.8      56     13       64
SEP
  18...    1030   1220       289      7.8     16.5     737      9.0       84       1.6      25      5.3     18


                     ALKA-                                       SOLIDS,   NITRO-   NITRO-   NITRO-   NITRO-
             POTAS-  LINITY             CHLO-    FLUO-   SILICA,  RESIDUE    GEN,     GEN,     GEN,   GEN,AM-
              SIUM,  WAT DIS  SULFATE   RIDE,    RIDE,    DIS-    AT 180   NITRITE  NO2+NO3  AMMONIA  MONIA +
              DIS-   TOT IT    DIS-     DIS-      DIS-    SOLVED   DEG. C    DIS-     DIS-     DIS-   ORGANIC
             SOLVED   FIELD    SOLVED   SOLVED   SOLVED   (MG/L     DIS-    SOLVED   SOLVED   SOLVED   TOTAL
    DATE     (MG/L   MG/L AS   (MG/L    (MG/L    (MG/L     AS      SOLVED   (MG/L    (MG/L    (MG/L    (MG/L
             AS K)    CACO3   AS SO4)   AS CL)   AS F)    SIO2)    (MG/L)   AS N)    AS N)    AS N)    AS N)
            (00935)  (39086)  (00945)  (00940)  (00950)  (00955)  (70300)  (00613)  (00631)  (00608)  (00625)

APR
  30...        1.7      92     230       20        0.10    1.2      458     <0.010    0.060    0.020     0.20
MAY
  30...        1.7      58      91       15        0.10    6.7      241      0.020    0.340    0.060     0.80
JUN
  27...        2.9      93       --       --       --      5.5      --       0.030    0.650    0.050     0.40
JUL
  25...        2.5     102     250       19        0.20    7.3      500      0.020    0.420    0.090    <0.20
AUG
  12...        2.5      84     230       16        0.20    3.7      452      0.010    0.300    0.030     0.30
SEP
  18...        2.2     108      67        6.5      0.10    7.7      164      0.010    0.730    0.050     0.40


             NITRO-                     PHOS-                                       CARBON,             SED.
            GEN,AM-            PHOS-   PHORUS    ALUM-             MANGA-  CARBON,  ORGANIC             SUSP.
            MONIA +   PHOS-   PHORUS    ORTHO,   INUM,    IRON,    NESE,   ORGANIC   SUS-     SEDI-    SIEVE
            ORGANIC  PHORUS     DIS-    DIS-      DIS-     DIS-     DIS-    DIS-    PENDED    MENT,     DIAM.
             DIS.     TOTAL    SOLVED  SOLVED    SOLVED   SOLVED   SOLVED  SOLVED    TOTAL    SUS-    % FINER
    DATE     (MG/L    (MG/L    (MG/L   (MG/L     (µG/L    (µG/L    (µG/L    (MG/L    (MG/L    PENDED    THAN
             AS N)    AS P)    AS P)   AS P)     AS AL)   AS FE)   AS MN)   AS C)    AS C)    (MG/L)  .062 MM
            (00623)  (00665)  (00666)  (00671)  (01106)  (01046)  (01056)  (00681)  (00689)  (80154)  (70331)

APR
  30...      <0.20     0.020    0.020   <0.010    160       53       82       2.0     0.70     13        48
MAY
  30...       0.30     0.110   <0.010   <0.010     70       34       30       2.9     1.9      68        95
JUN

  27...       0.20     0.020   <0.010   <0.010    117        8.0    100       3.1     0.70     23        99
JUL
  25...      <0.20    <0.010   <0.010   <0.010    145       15       61       2.2     0.40      9        96
AUG
  12...       0.20    <0.010   <0.010   <0.010    131       19       74       2.6     0.60      6        86
SEP
  18...       0.30     0.040    0.010    0.010     47       45       26       3.9     1.0      47        98


Start of Youghiogheny River Data
To List of Basic Fixed Sites
                                             MONONGAHELA RIVER BASIN

                                 03083500  YOUGHIOGHENY RIVER AT SUTERSVILLE, PA
                                   (National water-quality assessment station)

LOCATION.--Lat 40`14'24", long 79`48'24", Allegheny County, Hydrologic Unit 05020006, on left bank 500 ft upstream
   from highway bridge at Sutersville, 2.1 mi downstream from Sewickley Creek, at mile 15.2.

DRAINAGE AREA.--1,715 mi2.

                                             WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--October 1920 to current year.  Monthly discharge only for some periods, published in WSP 1305.

REVISED RECORDS.--WSP 743:   Drainage area.  WSP 1305:   1924, 1926 (M), 1931 (M).  WSP 1435:   1935-36.

GAGE.--Water-stage recorder.  Datum of gage is 733.36 ft above sea level.  Prior to June 1, 1939, nonrecording
   gage at site 500 ft downstream at same datum.

REMARKS.--Records good except for estimated daily discharges, which are fair.  Flow regulated since 1925 by Deep
   Creek Reservoir, since 1943 by Youghiogheny River Lake 58 mi upstream, and by several smaller reservoirs above
   station.  Several measurements of water temperature were made during the year.  U.S. Army Corps of Engineers
   satellite telemeter at station.

                   DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996
                                               DAILY MEAN VALUES

DAY       OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP

  1       671      900     3270     1690    e6200    10000     5070     6470     6660     1240     4400     1350
  2       653      886     3220     2270    e5800     8300     8160     5310     5710     1290     5670     1320
  3       631      849     3130     6050    e5400     7620     7780     4920     4050     1990     3660     1280
  4       718      882     2710     5860    e5000     6570     6570     4120     2450     2020     2930     1270
  5       783      966     2800     3860    e4800     6380     7100     4130     2040     1620     2720     1280

  6       844      888     2500     3360    e4700     8750     6060     8710     1900     1420     2770     1340
  7       893      836     2230     2720    e4600    11800     5350     9220     1740     1290     2720    10600
  8       911      872     2100    e2500    e4600    11000     4800    10800     1760     1260     2720     9130
  9       806     1010     1890    e2200    e9000     9050     4010    21900     1650     1600     3140     3830
 10       762     1040     1690    e2200    10200     7460     3690    15900     1680     1340     3230     4890

 11       758      942     1130    e2100     9050     6910     3480    12500     1850     1270     2070     4830
 12       688     1370     1350    e2000     9620     6690     2950    16900     2230     1060     1750     4500
 13       709     2270     1640    e2000     7540     6560     2560    12700     3130     1090     2190     4310
 14       850     1840     1760    e1900     6830     6340     2290    10800     2620     1070     2570     5320
 15      1250     2030     2000    e1800     6410     5180     2200     9360     2430     1160     2480     3220

 16      1130     1960     3660    e3000     4860     6270     4400     8700     2190     1740     3020     2410
 17       904     1760     6140    e5400     3620     5510     5820     9650     1950     1570     2400    12400
 18       748     1750     4270    e8900     3440     4860     5890    10700     1940     1400     1780    15200
 19       679     2080     3700    43500     2550     4560     5920     8680     3360    11700     1580     9650
 20       695     2420     3720    53000     3020    12800     5770     7510     4390    21800     1470     7840

 21       741     2420     3000    13500     7300    11900     5200     6860     3130     9160     1480     4520
 22      1710     2540     2560     8850     9030     8600     4690     5450     2260     8090     1840     3440
 23      1400     2340     2230     7580     8540     7340     4130     6080     1970     7550     1920     3770
 24       932     2280     2030     8850     8260     6620     3650     4650     2290     6900     1800     4270
 25       778     2230     1860    12400     8640     6300     3480     3360     3710     4200     1470     3630

 26       768     2020     1760     9330     6890     7530     2920     2550     3480     3230     1370     3300
 27       736     1910     1620     8530     9150     6780     2900     2230     2300     2420     1420     3040
 28       726     4580     1620    11200    22900     6150     2690     2610     1760     2000     1440     3470
 29       731     6800     1590     9350    16700     5980     3100     3550     1480     1830     1440     5500
 30       758     4370     1490    e8000      ---     5470     4560     5050     1350     2470     1470     4270
 31       813      ---     1580    e7000      ---     5100      ---     7000      ---     3980     1420      ---

TOTAL   26176    59041    76250   260900   214650   230380   137190   248370    79460   110760    72340   145180
MEAN      844     1968     2460     8416     7402     7432     4573     8012     2649     3573     2334     4839
MAX      1710     6800     6140    53000    22900    12800     8160    21900     6660    21800     5670    15200
MIN       631      836     1130     1690     2550     4560     2200     2230     1350     1060     1370     1270
>        -459     +265     +409    +1440     -377     +317      +22     +193     -179     +105     -405      +20

   >  Change in contents, equivalent in cubic feet per second, in Deep Creek Reservoir and Youghiogheny River
      Lake.  Records of contents in Deep Creek Reservoir furnished by Pennsylvania Electric Co.  Records of
      contents in Youghiogheny River Lake furnished by U.S. Army Corps of Engineers.
   e  Estimated.
                                             MONONGAHELA RIVER BASIN

                            03083500  YOUGHIOGHENY RIVER AT SUTERSVILLE, PA--Continued

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1921 - 1996, BY WATER YEAR (WY)  (SINCE REGULATION)

          OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP

MEAN     1503     2085     3662     4021     4596     5964     4931     3684     2256     1595     1452     1372
MAX      7006     5818     9373     8488     9630    13720    10230     8012     7318     4853     5707     6382
(WY)     1955     1922     1973     1974     1939     1936     1940     1996     1941     1985     1956     1971
MIN       107      209      596      611      716     1539     1637     1012      585      614      309      185
(WY)     1924     1923     1954     1925     1934     1990     1921     1982     1925     1942     1922     1922

SUMMARY STATISTICS           FOR 1995 CALENDAR YEAR        FOR 1996 WATER YEAR           WATER YEARS 1921 - 1996

ANNUAL TOTAL                      783916                    1660697
ANNUAL MEAN                         2148   >-3.1               4537   >+116               3086
HIGHEST ANNUAL MEAN                                                                       4537              1996
LOWEST ANNUAL MEAN                                                                        1496              1925
HIGHEST DAILY MEAN                  9320     Mar  1           53000     Jan 20           79000       Mar 18 1936
LOWEST DAILY MEAN                    623     Sep 30             631     Oct  3              57       Sep 30 1922
ANNUAL SEVEN-DAY MINIMUM             643     Sep 27             742     Oct  1              64       Sep 24 1922
INSTANTANEOUS PEAK FLOW                                       84100     Jan 19          108000       Oct 16 1954
INSTANTANEOUS PEAK STAGE                                         28.19  Jan 19             a32.50    Oct 16 1954
INSTANTANEOUS LOW FLOW                                                                     b57    Sep 29,30 1922
ANNUAL RUNOFF (CFSM)                   1.25                       2.65                       1.80
ANNUAL RUNOFF (INCHES)                17.00                      36.02                      24.45
10 PERCENT EXCEEDS                  4520                       9070                       6850
50 PERCENT EXCEEDS                  1640                       3110                       1930
90 PERCENT EXCEEDS                   745                        997                        686

   >  Change in contents, equivalent in cubic feet per second, in Deep Creek Reservoir and Youghiogheny River
      Lake.  Records of contents in Deep Creek Reservoir furnished by Pennsylvania Electric Co.  Records of
      contents in Youghiogheny River Lake furnished by U.S. Army Corps of Engineers.
   a  From floodmark.
   b  Minimum observed.
                                             MONONGAHELA RIVER BASIN

                            03083500  YOUGHIOGHENY RIVER AT SUTERSVILLE, PA--Continued

                                              WATER-QUALITY RECORDS

PERIOD OF RECORD.--April 1996 to current year.

REMARKS.--All water-quality samples collected and analyzed by the U.S. Geological Survey.  Additional sites in the
   fixed-station network are shown in figure 4, page 26.

                          WATER-QUALITY DATA, WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996

                       DIS-              PH               BARO-
                     CHARGE,   SPE-     WATER             METRIC            HARD-             MAGNE-
                      INST.    CIFIC    WHOLE             PRES-             NESS    CALCIUM    SIUM,  SODIUM,
                      CUBIC    CON-     FIELD   TEMPER-    SURE   OXYGEN,   TOTAL    DIS-      DIS-    DIS-
                       FEET    DUCT-   (STAND-   ATURE     (MM      DIS-    (MG/L    SOLVED   SOLVED  SOLVED
    DATE      TIME     PER     ANCE      ARD     WATER      OF     SOLVED    AS      (MG/L    (MG/L    (MG/L
                      SECOND  (µS/CM)   UNITS)  (DEG C)    HG)     (MG/L)   CACO3)   AS CA)   AS MG)   AS NA)
                     (00061)  (00095)  (00400)  (00010)  (00025)  (00300)  (00900)  (00915)  (00925)  (00930)

APR
  29...       1015     3080     314      6.9     12.0      734     10.2      98        27      7.5      16
MAY
  28...       1430     2700     291      7.5     14.0      735      9.7      97        26      7.7      14
JUN
  26...       1000     3610     249      6.9     19.0      743      8.3      79        22      5.9      11
JUL
  24...       0930     7030     155      7.3     19.0      739      8.9      50        14      3.6       7.1
AUG
  13...       1415     2220     254      7.5     21.5      739      9.0      78        22      5.7      14
SEP
  17...       0930     8040     234      7.4     16.5      731      8.8      78        22      5.7      10


                     ALKA-                                       SOLIDS,   NITRO-   NITRO-   NITRO-   NITRO-
             POTAS-  LINITY             CHLO-    FLUO-   SILICA,  RESIDUE    GEN,     GEN,     GEN,   GEN,AM-
              SIUM,  WAT DIS  SULFATE   RIDE,    RIDE,    DIS-    AT 180   NITRITE  NO2+NO3  AMMONIA  MONIA +
              DIS-   TOT IT    DIS-     DIS-      DIS-    SOLVED   DEG. C    DIS-     DIS-     DIS-   ORGANIC
             SOLVED   FIELD    SOLVED   SOLVED   SOLVED   (MG/L     DIS-    SOLVED   SOLVED   SOLVED   TOTAL
    DATE     (MG/L   MG/L AS   (MG/L    (MG/L    (MG/L     AS      SOLVED   (MG/L    (MG/L    (MG/L    (MG/L
             AS K)    CACO3   AS SO4)   AS CL)   AS F)    SIO2)    (MG/L)   AS N)    AS N)    AS N)    AS N)
            (00935)  (39086)  (00945)  (00940)  (00950)  (00955)  (70300)  (00613)  (00631)  (00608)  (00625)

APR
  29...        1.4        27    78       17       <0.10    3.8        183    0.010    0.870    0.070     0.20
MAY
  28...        1.5        33    82       12        0.10    4.8        177   <0.010    0.690    0.110     0.20
JUN
  26...        1.7        26    58       11        0.10    5.1        128    0.010    1.00     0.040     0.60
JUL
  24...        1.3        16    32        7.5      0.10    4.4         89    0.010    0.790    0.050    <0.20
AUG
  13...        1.8        25    65       10       <0.10    4.0        150    0.020    0.760    0.030     0.20
SEP
  17...        2.1        46    52       12       <0.10    4.9        140    0.020    0.830    0.030     0.50


             NITRO-                     PHOS-                              CARBON,             SED.
            GEN,AM-            PHOS-   PHORUS             MANGA-  CARBON,  ORGANIC             SUSP.
            MONIA +   PHOS-   PHORUS    ORTHO,   IRON,    NESE,   ORGANIC   SUS-     SEDI-    SIEVE
            ORGANIC  PHORUS     DIS-    DIS-      DIS-     DIS-    DIS-    PENDED    MENT,     DIAM.
             DIS.     TOTAL    SOLVED  SOLVED    SOLVED   SOLVED  SOLVED    TOTAL    SUS-    % FINER
    DATE     (MG/L    (MG/L    (MG/L   (MG/L     (µG/L    (µG/L    (MG/L    (MG/L    PENDED    THAN
             AS N)    AS P)    AS P)   AS P)     AS FE)   AS MN)   AS C)    AS C)    (MG/L)  .062 MM
            (00623)  (00665)  (00666)  (00671)  (01046)  (01056)  (00681)  (00689)  (80154)  (70331)

APR
  29...      <0.20     0.020   <0.010   <0.010     88     180        1.5      0.40    21        92
MAY
  28...       0.30     0.020   <0.010   <0.010     85     150        1.3      0.50     3        29
JUN
  26...       0.20     0.110   <0.010   <0.010     13      36        2.2      2.2     70        90
JUL
  24...      <0.20    <0.010   <0.010   <0.010     69      68        1.8      0.70    15        81
AUG
  13...       0.20    <0.010    0.030    0.010     86      30        2.2      0.70    11        90
SEP
  17...      <0.20     0.110   <0.010    0.010     72      34        2.7      4.1     94        91



Start of Monongahela River Data
To List of Basic Fixed Sites
                                             MONONGAHELA RIVER BASIN

                                   03085000  MONONGAHELA RIVER AT BRADDOCK, PA
                                   (National water-quality assessment station)

LOCATION.--Lat 40`23'28", long 79`51'30", Allegheny County, Hydrologic Unit 05020005, near right bank on river
   guide wall 300 ft upstream from dam at lock 2 at Braddock, 1,700 ft downstream from Turtle Creek, and 11.2 mi
   upstream of confluence with Allegheny River.

DRAINAGE AREA.--7,337 mi2.

                                             WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--October 1938 to current year.  Monthly discharge only for some periods, published in WSP 1305.

GAGE.--Water-stage recorder and fixed-crest concrete dam control with streamward lock chamber usable as floodway
   during high flow since 1951.  Datum of gage is 709.66 ft above sea level (U.S. Army Corps of Engineers bench
   mark).  Prior to Aug. 13, 1951, at site 700 ft upstream, and Aug. 13, 1951 to Nov. 8, 1990 at present site at
   datum 2.50 ft lower.

REMARKS.--No estimated daily discharges.  Records good.  Flow regulated by locks and hydroelectric plants, since
   1938 by Tygart Lake, since 1926 by Lake Lynn, since 1925 by Deep Creek Reservoir, and since 1943 by
   Youghiogheny River Lake, combined capacity, 704,300 acre-ft.  Figures of daily discharge include slight
   diversion from Beaver Run Reservoir in the Kiskiminetas River Basin to the borough of Jeannette in the
   Monongahela River Basin.  U.S. Army Corps of Engineers satellite telemeter at station.

EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of Mar. 18, 1936 reached a stage of 38.8 ft from, floodmarks, discharge,
   210,000 ft3/s.

                  DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996
                                               DAILY MEAN VALUES

DAY       OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP

  1      1780     3360    14700     4890    27400    37900    20600    18500    32000     3260    63800     3300
  2      1500     4230    11500     7240    24100    30600    28200    20800    23400     5070    36400     2780
  3      1850     3070    12500    25000    18900    26300    26500    21500    15400     6040    29300     3120
  4      3020     3320     9450    31700    15900    23900    20900    18600     9390     6510    25200     3000
  5      3260     2440    10600    26800    14800    21400    22800    32300     8270     8090    21900     3730

  6      2990     2440     9920    21600    12900    34000    19200    65700     5990     6950    20100     5950
  7      2360     3190     8720    13600    11500    48200    15500    61000     6960     6090    16400    22500
  8      2120     3950     9210     7860    11600    47700    15300    48400     6100     4400    13900    27800
  9      2210     3980     8060     9090    33500    43000    15600    58100     5890     4790    13900    15700
 10      2300     4830     5610     8750    45700    35400    13300    64300     5640     5530    11500     9110

 11      1910     5740     4490     8390    35000    24500    12500    50800     6900     5710    10400    13800
 12      1940     5790     4570     7270    34800    22600    11000    64700     6120     4670     9030    12300
 13      1700     8650     4600     8710    31500    20200     8520    61800     9130     4120    19000    11700
 14      2260     9820     4820     7200    25100    16500     9130    47500     8290     3080    27900     9590
 15      4270    10700     6070     7420    19800    17700     9500    39900     6770     3140    24900     8870

 16      3870     9760    11200     8850    15900    31300    15400    36800     6860     4390    18400     7050
 17      3810     9200    22000    12100    14500    26400    23800    59600     5080     3470    11900    33400
 18      2680     8730    16000    44600    13400    22900    26500    73300     5870     6040    11800    54200
 19      2840     8760    19900   100000     9350    22700    26900    46900    12900    38400     8630    33500
 20      2390     9410    38000   188000    12300    42800    25300    39200     9030    88100     6980    27200

 21      2430    10300    32400    63300    32100    45000    15700    35200     8840    43700     6380    20600
 22      2340    12900    27300    33600    29100    34000    15900    35900     7260    33000     4850    12000
 23      2990     9840    17200    32700    27400    26800    15000    36400     5310    39900     5160     9910
 24      2890     9570    15600    38600    28000    23800    12900    30000     6540    36300     5360     9720
 25      2380    10300    12100    56100    24900    24500    10600    24900    13100    25400     4700     8610

 26      2380     9870     8510    46400    21900    29600     9600    15100    11500    17900     5790     7780
 27      1990     9360     8000    39500    31100    27500     8090    12700     8330    15600     4960     6940
 28      1730    12200     6810    42800    75000    26900     6740    21700     6720     8300     3500     8190
 29      1740    19700     6890    35500    70600    29500    10300    30700     4250     6540     3930    20800
 30      2470    17500     5040    33800      ---    28000    13400    42000     4020     6690     3480    15900
 31      3960      ---     4170    32400      ---    24700      ---    35200      ---    24600     3880      ---

TOTAL   78360   242910   375940  1003770   768050   916300   484680  1249500   271860   475780   453330   429050
MEAN     2528     8097    12130    32380    26480    29560    16160    40310     9062    15350    14620    14300
MAX      4270    19700    38000   188000    75000    48200    28200    73300    32000    88100    63800    54200
MIN      1500     2440     4170     4890     9350    16500     6740    12700     4020     3080     3480     2780
CFSM      .34     1.10     1.65     4.41     3.61     4.03     2.20     5.49     1.24     2.09     1.99     1.95
IN.       .40     1.23     1.91     5.09     3.89     4.65     2.46     6.34     1.38     2.41     2.30     2.18


                                             MONONGAHELA RIVER BASIN

                              03085000  MONONGAHELA RIVER AT BRADDOCK, PA--Continued

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1939 - 1996, BY WATER YEAR (WY)

          OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP

MEAN     5321     9278    15780    17300    20920    24040    18860    14220     9131     6342     5919     4729
MAX     23130    42130    37600    36150    43120    54500    39180    40310    30240    15620    23720    18290
(WY)     1980     1986     1973     1952     1956     1963     1940     1996     1981     1958     1956     1971
MIN      1200      971     2748     3389     6387     8042     6473     3352     2107     1765     1531     1005
(WY)     1954     1954     1954     1977     1954     1969     1971     1982     1965     1966     1957     1946

SUMMARY STATISTICS           FOR 1995 CALENDAR YEAR        FOR 1996 WATER YEAR           WATER YEARS 1939 - 1996

ANNUAL TOTAL                     3386880                    6749530
ANNUAL MEAN                         9279                      18440                      12600
HIGHEST ANNUAL MEAN                                                                      18440              1996
LOWEST ANNUAL MEAN                                                                        6946              1954
HIGHEST DAILY MEAN                 55700     May 15          188000     Jan 20          188000       Jan 20 1996
LOWEST DAILY MEAN                   1430     Sep  2            1500     Oct  2             703       Sep  3 1946a
ANNUAL SEVEN-DAY MINIMUM            1710     Sep  6            2060     Oct  8             839       Nov 17 1953
INSTANTANEOUS PEAK FLOW                                      210000     Jan 20          210000       Jan 20 1996
INSTANTANEOUS PEAK STAGE                                         29.07  Jan 20             b31.20    Jun  5 1941
ANNUAL RUNOFF (CFSM)                   1.26                       2.51                       1.72
ANNUAL RUNOFF (INCHES)                17.17                      34.22                      23.34
10 PERCENT EXCEEDS                 22300                      38800                      29300
50 PERCENT EXCEEDS                  6240                      12100                       7710
90 PERCENT EXCEEDS                  1930                       3260                       2250

   a  Also Sept. 4, 22, 1946.
   b  Maximum gage height, 31.39 ft, June 24, 1972 (backwater from Allegheny River).  Datum then in use.


                                             MONONGAHELA RIVER BASIN

                              03085000  MONONGAHELA RIVER AT BRADDOCK, PA--Continued

                                              WATER-QUALITY RECORDS

PERIOD OF RECORD.--October 1958 to September 1993 (discontinued). September 1994 to current year.
REMARKS.--All water-quality samples collected and analyzed by the U.S. Geological Survey.  Additional sites in the
  fixed-station network are shown in figure 4, page 26.

                          WATER-QUALITY DATA, WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996

                       DIS-              PH               BARO-
                     CHARGE,   SPE-     WATER             METRIC            HARD-             MAGNE-
                      INST.    CIFIC    WHOLE             PRES-             NESS    CALCIUM    SIUM,  SODIUM,
                      CUBIC    CON-     FIELD   TEMPER-    SURE   OXYGEN,   TOTAL    DIS-      DIS-    DIS-
                       FEET    DUCT-   (STAND-   ATURE     (MM      DIS-    (MG/L    SOLVED   SOLVED  SOLVED
    DATE      TIME     PER     ANCE      ARD     WATER      OF     SOLVED    AS      (MG/L    (MG/L    (MG/L
                     SECOND   (µS/CM)   UNITS)  (DEG C)    HG)     (MG/L)   CACO3)   AS CA)   AS MG)   AS NA)
                     (00061)  (00095)  (00400)  (00010)  (00025)  (00300)  (00900)  (00915)  (00925)  (00930)
DEC
  07...       1030     8400     265      6.1      4.5      739     12.0      81        23      5.7     14
JAN
  20...       1700   179000     153      5.8      2.5      --       --       47        14      3.0      5.9
APR
  22...       0830    15700     307      7.1     14.0      740     10.5     110        31      8.1     15
MAY
  28...       0900    21400     249      7.6     15.5      734      9.2      82        23      6.0     11
JUN
  11...       0930     6940     357      7.4     23.0      738     10.0     120        33      8.3     20
JUL
  18...       1000     4780     490      7.6     26.5      739      6.8     160        43     12       30
AUG
  13...       0915    18200     245      7.6     23.0      738      9.8      76        22      5.2     13
SEP
  12...       0900    12200     200      7.5     23.5      734      9.1      66        19      4.5      9.5

                      ALKA-                                       SOLIDS,   NITRO-   NITRO-   NITRO-   NITRO-
             POTAS-  LINITY             CHLO-    FLUO-   SILICA,  RESIDUE    GEN,     GEN,     GEN,   GEN,AM-
              SIUM,  WAT DIS  SULFATE   RIDE,    RIDE,    DIS-    AT 180   NITRITE  NO2+NO3  AMMONIA  MONIA +
              DIS-   TOT IT    DIS-     DIS-      DIS-    SOLVED   DEG. C    DIS-     DIS-     DIS-   ORGANIC
             SOLVED   FIELD    SOLVED   SOLVED   SOLVED   (MG/L     DIS-    SOLVED   SOLVED   SOLVED   TOTAL
    DATE     (MG/L   MG/L AS   (MG/L    (MG/L    (MG/L     AS      SOLVED   (MG/L    (MG/L    (MG/L    (MG/L
             AS K)    CACO3   AS SO4)   AS CL)   AS F)    SIO2)    (MG/L)   AS N)    AS N)    AS N)    AS N)
            (00935)  (39086)  (00945)  (00940)  (00950)  (00955)  (70300)  (00613)  (00631)  (00608)  (00625)
DEC
  07...      1.5        20      63       15       <0.10    4.7      144      0.010    0.950    0.110    <0.20
JAN
  20...      1.7        --      27        9.2      0.10    4.0       90      0.030    1.10     0.140     0.80
APR
  22...      1.1        27      92       12        0.10    4.6      175      0.020    0.660    0.130     0.20
MAY
  28...      1.4        27      68        8.1      0.10    5.0      158      0.010    0.520    0.090     0.30
JUN
  11...      1.7        36      95       16        0.20    5.3      212      0.030    0.690    0.110     0.30
JUL
  18...      2.3        57     140       20        0.20    4.5      297      0.020    0.800    0.070     0.30
AUG
  13...      1.6        29      62        7.7     <0.10    4.7      146      0.020    0.540    0.050     0.30
SEP
  12...      1.3        38      55        7.1     <0.10    4.2      117      0.020    0.590    0.110     0.30

            NITRO-                     PHOS-                                       CARBON,             SED.
            GEN,AM-            PHOS-   PHORUS    ALUM-             MANGA-  CARBON,  ORGANIC             SUSP.
            MONIA +   PHOS-   PHORUS    ORTHO,   INUM,    IRON,    NESE,   ORGANIC   SUS-     SEDI-    SIEVE
            ORGANIC  PHORUS     DIS-    DIS-      DIS-     DIS-     DIS-    DIS-    PENDED    MENT,     DIAM.
             DIS.     TOTAL    SOLVED  SOLVED    SOLVED   SOLVED   SOLVED  SOLVED    TOTAL    SUS-    % FINER
    DATE     (MG/L    (MG/L    (MG/L   (MG/L     (µG/L    (µG/L    (µG/L    (MG/L    (MG/L    PENDED    THAN
             AS N)    AS P)    AS P)   AS P)     AS AL)   AS FE)   AS MN)   AS C)    AS C)    (MG/L)  .062 MM
            (00623)  (00665)  (00666)  (00671)  (01106)  (01046)  (01056)  (00681)  (00689)  (80154)  (70331)
DEC
  07...      <0.20     0.040    0.030   <0.010     40       41     140        --        --        --       --
JAN
  20...       0.40     0.040    0.050    0.070     --      170     410        --        --        --       --
APR
  22...       0.20    <0.010   <0.010   <0.010     --       37     190        1.3      0.30        7       81
MAY
  28...       0.20     0.030    0.010   <0.010     --       39     110        1.6      1.3        83       97
JUN
  11...       0.40     0.090    0.080   <0.010     --       47     110        1.8      0.50       12       98
JUL
  18...       0.20     0.040   <0.010    0.010     --       30       9.0      1.7      0.50       20       87
AUG
  13...      <0.20     0.020   <0.010    0.010     --       44      19        2.4      0.70       29       96
SEP
  12...       0.20    <0.010    0.020    0.010     --       45      71        1.9      0.50       13       94



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